US293703A

US293703A - Lifting-jack

Info

Publication number: US293703A
Authority: US
Publication date: 1884-02-19
Anticipated expiration: 1901-02-19

Description

No Model.)

'J. P.v BAZILL.

- LIFTING JACK. No. 293,703. Patented Peb.'19,11884.

UNITED STATES PATENT OFFICE.

JOSEPH F. BAZILL, OF OHRISTIANSBURG, OHIO.

I L'IFTlNG-JACK.

SPECIFICATION forming part of Lettrs Patent No. 293,703, dated February 19, 1884.

' Application filed July31, 1883. (No model.)

To (ZZZ whom zit may concern:

Be it known that I, J OSEPH F. BAZILL, a citizen of the United States, residing at Christiansburg, in the county of Ohampaign and State of Ohio, have invented certain new and useful Improvements in Lifting-J acks, of which the following is a specification, reference being had therein to the accompanying draw- 1ngs. I

My invention relates to lifting-jacks; and it consists in certain details of construction and arrangement of the several parts, as will be hereinafter more fully set forth in the specifi cation and pointed out in the accompanying drawings, in which Figures 1, 2, 3, and 4 are perspective views of my device.

-Referring more particularly to the drawings,-B represents the base of the jack, attached to which are the standards F, notched or grooved on their inside edges, as shown at n in the several figures. WVhen these standards are made of wood, I drive nails 19 into the edges of the standards and between the notches, so as to strengthen the material and prevent the notches from breaking through by strain from the clevis r.

Attached to the lever Z, at a suitable point to form a proper fulcrum, is a clevis, r, which engages with the notches 'n. In the liftingjacks in general use there is simply a pin or bar, that rests in the notches n,

The clevis I have adopted serves several new and useful purposes. First, the lever Z can, by means of it, be easily and'quickly shifted into any new position on the standards F; second, instead of the strain coming straight downward on the notches, it is directed diagonally across the faces of the standards, thus obviating the tendency to break through the notches by strain on the lever.

I have shown in Fig. 1 a clamp, 12, secured to lever Z, consisting of two arms bent into the form there shown, so as to grasp one of the standards. In Fig. 2 the clamp bis bent around the standard. In Fig. 3 the rod bis curved atits lower end and provided with holes 0, which engage with a pin, 0, on the base B. The object of these clamp-rods is to hold the lever in any fixed position when engaged in lifting a load. A hook-rod, h, is placed on the outside end of the lever Z and kept from slipping by means of a pin inserted in the lever. The object of this rod h is to lift fences. As it is impossible to insert the end of the jack under a fence-corner, I place the free end of rod h under the fence, and then have enough leverage for the purpose. The lever Zin Fig. 4is notched a portion of the length, near the standards, to receive a pawl, d, on the clevis r. A rod, 6, attached to the handle or lever Z, is for the purpose of releasing the pawl from its engaged position. This pawl gives additional strength and security against slipping when the lever is placed under a load.

While I preferably make the several parts of wood, I may make the base, standards, and lever of cast or malleable iron.

A lifting-jack made as above described affords a ready means for farmers and others to lift Wagons, buggies, and other vehicles, and at'same time serves auseful purpose as ai'encelifter.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is'- 1. A lifting-jack consisting of the base and standards provided with notches, a lever, Z, the clamping-rod b, and the clevis r, secured to the lever, substantially as shown and described.

, 2. The combination, in a lifting-jack, of the base and standards, with the lever Z, having the securing-rod I; attached thereto, the pawl d, clevis r, and lifting-rod h, substantially as and for the purpose set forth.

In testimony wh ereof I affix my signature in presence of two witnesses.

JOSEPH F. BAZILL. Witnesses:

A. G. MILLER, GEO. P. HELVIE.